baber/WOPTO huggingface dataset:
Patent GB-1456174-A (GB)
Title: Alarm apparatus for the operaint range of cranes
IPC: B66C15/04
Filed: 1975-01-29
Abstract: 1456174 Crane safety devices SHIMIZU CONSTRUCTION CO Ltd 29 Jan 1975 [4 March 1974 6 March 1974] 3967/75 Heading B8B A device for restricting the range of operation of a crane gives an alarm signal on approach of a collision and cuts off power when collision is imminent. As shown, applied to a luffing tower crane, Fig. 1 (not shown), a transparent disc 13 carries an opaque paper pattern 24, which is a small scale version of the allowable operations range, and is rotated by a selsyn 12 connected to a selsyn 7 rotated by the slewing mechanism of the crane. A bifurcated member 15 is mounted for radial movement with respect to the disc 13, its position being controlled by a sine-characteristic potentiometer 26 co-operating with the boom (4) to represent the operating radius thereof. A light-receiving element 16 and a lightemitting element 17 are mounted to face each other on the upper and lower forks of the member 15 and together form a sensor 18 which, when the pattern 24 blocks the light passing cuts off the crane power. Other, similar sensors 35, 36, 37 are mounted around the sensor 18 and are arranged to give alarm signals indicating the approach of a collision. Fig. 6(A) shows the sensor 35 in an alarm position due to clockwise rotation of the disc 13 (corresponding to counterclockwise slewing of the crane) bringing the boom (4) near to an obstruction represented by the shaded area e<SP>1</SP> corresponding, in this example, to a section of railway track (e), (f<SP>1</SP> and g<SP>1</SP> represent a section of a road (f) and a building (g), respectively).
Patent GB-490367-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02P5/51
Filed: 1937-02-10
Abstract: 490,367. Field control of several motors. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 10, 1937, No. 4003. Convention date, Feb. 13, 1936. [Class 38 (iii)] In continuous rolling-mills wherein successive rolls are driven by individual D.C. motors, a series resistance in the field circuit of each motor, or of each motor subsequent to the first, is short circuited when the corresponding motor is unloaded, and is inserted in circuit by a relay, responsive to the armature current of the motor when loaded,to maintain the speed of the motor substantially constant. The first and subsequent motors 1, 2, 3 .. have separately excited fields F with regulators G for initial adjustment. The motors 2, 3, .. subsequent to the first have also a field series resistance R adjustable according to the rolling schedule and short circuited when the corresponding motor is unloaded. In the example I, the short circuit of each resistance R is removed directly by a load relay S, as the corresponding motor comes on load, while in example II the device S is actuated through a load relay Re, with or without a time adjustment. The device S may have a variable operating point. Specification 413,268 is referred to.
Patent GB-1035752-A (GB)
Title: Improvements in or relating to circuit arrangements for safeguarding electrical measuring instruments from overloads
IPC: G01R1/36
Filed: 1965-01-29
Abstract: 1,035,752. Protective arrangements. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 29, 1965 [Feb. 1, 1964], No. 4025/65. Heading H2K. [Also in Division G1] A protective arrangement for a measuring instrument, e.g. a multi-range meter, comprises a polarized relay having a first coil connected in series with the instrument and a second coil connected in series with a rectifier, the two series circuits being connected in parallel and having resistances such that when " reverse " current flows through the rectifier the second coil has a predominating effect and operates the relay to switch-off the instrument. Under " forward " overload conditions the first coil only is energized and produces relay operation.
Patent GB-179303-A (GB)
Title: Window fastener
IPC: E05C3/04
Filed: 1921-02-03
Abstract: 179,303. Pippett, S. W. R. Feb. 3, 1921. S a s h - fasteners, pivoted-arm type.-In a window-fastener having a bar A pivoted at D tb the outer sash carrying a sliding member which automatically descends in front of the inner sash when the bar is swung forward for fastening; the front of the inner sash is fitted with a wedge-piece B into contact with which a sliding pin C on the bar A falls.
Patent GB-585306-A (GB)
Title: An improved method of and means for vibration treatment of roads, floors and like structures of concrete and other plastic material
IPC: E01C19/38
Filed: 1945-02-17
Abstract: 585,306. Vibrating screeds. JOHNSON & SONS, Ltd., C. H., NEESOM, C. H., DEARDEN, B. B., 'and HARTLEY, J. A. Feb. 17, 1945, No. 4073. [Class 107] [Also in Group II] A road, floor or like structure of concrete or other plastic material is consolidated by treatment with a vibrating contact element such as a screed comprising an unbalanced rotary member for imparting vibration to and for causing traverse of the contact element. The unbalanced member has a rotary component of force in a plane vertical to and in line with the direction of self traverse of the contact element. A tubular housing g, Fig. 1, mounted on brackets f at the centre of a screed a, carries in bearings i, Fig. 2, an unbalanced shaft h. The latter is rotated by an internal combustion engine n controlled by a throttle p mounted on one of the two handles b by which the screed is manipulated. On running the engine at a speed of approximately 3,000 r.p.m. a vibration frequency of approximately 4,000 per minute is produced by suitable gearing, and the screed is caused to traverse the surface to be treated in a direction at right angles to the length of the housing g. In a modified construction a separate vibrating unit is mounted at each end of a screed, and the unbalanced shafts thereof are rotated in the same direction.
Patent GB-627755-A (GB)
Title: Method of improving the wet strength of cigarette paper
Filed: 1947-02-12
Abstract: 627,755. Cigarette paper. MATTHEWS, R. E., and HARRISON, W. D. Feb. 12, 1947, No. 4092. Convention date, Sept. 16, 1944. [Class 96] The wet strength of absorbent cigarette paper containing an alkaline filler, e.g. calcium carbonate is somewhat increased by impregnating the moist web with a very dilute solution of a urea-formaldehyde polymer and an acid salt catalyst, e.g. mono- or di-ammonium phosphate or ammonium sulphate. The solution may be applied, e.g. between the fifth and sixth of ten drying rolls, by a size press as illustrated, so that less than 0.1 per cent of polymer remains in the paper, the polymer being thus quickly heated and set. Specification 583,149 is referred to.
Patent GB-1220093-A (GB)
Title: Improvements in or relating to the manufacture of matchsticks
IPC: C06F5/00
Filed: 1968-01-26
Abstract: 1,220,093. Match splints and bookmatch combs. INDUSTRILABORATORIET A.B. 26 Jan., 1968 [2 Feb., 1967], No. 4215/68. Heading F3A. A method of manufacturing match splints or bookmatch combs comprises applying a surface layer 11 of a heat liquefied, combustible, solid paraffin or paraffin-like material on to a web 1 of hard rolled cardboard having a specific gravity of more than 1, e.g. by passing through coating rollers 5 and 6; advancing the coated web through rolls 2 and 3, one of which has cutting edges to divide the web into a plurality of strips or filaments; and subdividing the strips into bookmatch combs or the filaments into splints 10. Alternatively, the web can be divided into strips or splints prior to applying the surface layer. The cardboard has a preferred specific gravity of 1.1. Stearin, shellac and drying oil can be incorporated in the material of the surface layer. The dividing rollers can be used to produce splints of triangular cross-section, which can, if required, be transformed to a circular cross-section by drawing through dies. The material of the surface layer is retained in the flame zone during combustion of the splint by roughening the surface of the cardboard, incorporating a granular material such as wood dust in the material of the surface layer, or incorporating a foaming agent and/or thickener, e.g. polythene dust, ethylene vinyl acetate, into the surface layer material to prevent it from spreading as it melts.
Patent GB-193661-A (GB)
Title: Improvements in doffing mechanism for spinning and twisting frames
IPC: D01H9/04
Filed: 1922-02-14
Abstract: 193,661. Boyd, T. A., Boyd, H. A., Boyd, J., and Boyd, Ltd., J. & T. Feb. 14,1922. Doffing-arrangements; thread-severing arrangements.-In spinning and twisting machines in which the bobbins are doffed from the lower ends of the spindles a bracket 9, movabLe towards and from the spindle, carries a semicircular projection 9<1> at its upper end to steady the spindle during the doffing operations, and, slidable on a rod 10, a bobbin carrier 11 provided with spring clips 11<1> and a forked thread-stripper 13<1> normally supported by a bar 15 on the frame of the machine. The spindle and lifter rail are lowered and the bracket 9 advanced so that the projection 9<1> embraces the spindles, the carrier 11 pushes the full bobbin into a receiver 16 and carries the empty bobbin into alignment with the spindle, and the stripper, released from its support 15, falls along the rod 10 and strips the thread from the spindle. When the lifter rail is raised, it carries the carrier 11 and the stripper 13<1> with it, and these, when the bracket 9 is withdrawn, respectively fall along the rod 10 and engage the support 15. The receiver 16 is raised to the position shown in dotted lines before spinning recommences, and, after a few turns have been wound on the empty bobbin, a spike 23<1> is inserted in the full bobbin to prevent it from rotating and the receiver jerked outwards so as to sever the yarn extending from the bobbin across a blade 22, which is raised into the position shown in dotted lines for this purpose.
Patent GB-474725-A (GB)
Title: Improvements in glass building units
IPC: E04C1/42
Filed: 1937-02-13
Abstract: 474,725. Making glass building-blocks. CORNING GLASS WORKS. Feb. 13, 1937, No. 4388. Convention date, March 25, 1936. [Class 56] [Also in Group X] A hollow glass building-unit consists of two identical halves 11 sealed together and provided with tapered peripheral flanges 13 and with corrugations 14, 15 on their inner faces. The corrugations of the two halves are preferably at right-angles to one another and may be parallel to the sides of the unit or diagonally arranged. Peripheral ribs 16 and tapered ribs 17 are provided on the unit. In making a unit, the two halves are pressed to shape and the edges of the flanges 13 fused together ; to obtain a lesser vacuum inside the unit, a carbon or graphite peg is inserted between the abutting edges of the flanges during sealing and subsequently withdrawn and the opening sealed at a lower temperature.
Patent GB-1385024-A (GB)
Title: Digital signal handling techniques
IPC: H03G5/02
Filed: 1971-02-12
Abstract: 1385024 Gain control EMI Ltd 4 May 1972 [12 Feb 1971] 4508/71 Heading H4R Digital audio signal has its gain controlled by feeding the digitized audio signal to a multiplier 4 to the other input of which is fed the state of a counter 2 fed with the output of a variable frequency oscillator 1. As described the output of the oscillator increases as the lever 3 is moved either one way or the other from a datum position with movement of the lever one way causing up counting of counter 2 and movement the other way causing down counting. The counter 2 provides an output state which varies logarithmically with the input pulses from generator 1 and a store 5 is provided to register any desired count, and reset the counter to that count at any later time on depression of a recall button. The logarithmic counter Fig. 2, comprises a conventional binary counter 6 with a set of J-K flip-flops 7a to 7l connected by their set inputs to the counter stages and their Q output connected to the other inputs of the following stage, in the direction of least significant counting stage, and also to respective inputs of an AND gate 8. The first J-K flipflop is fed with the pulses to be counted, which are also applied to one input of the AND gate 8, and the AND gate output is taken to the counter input. With a count of zero in counter 6 all Q outputs of the flip-flops are 1's and the pulse stream from the generator feeds directly through AND gate 8 to counter 6. When the counter is half full and the last stage of counter 6 is set, only half the pulses from the generator 1 pass through AND gate 8 to the counter, so the counting rate is halved. When the counter is ¥ full the last but one stage of counter 6 is set, and the pulse rate to the counter is again halved, thus as counting proceeds the counting rate is continually reduced in an approximately logarithmic progression. Also described is a digital low pass filter Fig. 3 (not shown) in which the output of a digital recursive filter (D) fed with a digitized signal is added to the digitized signal to provide base cut or lift.
Patent GB-105097-A (GB)
Title: Improvements in or relating to the Manufacture of Animal Shoes.
IPC: B21K15/02
Filed: 1916-03-28
Abstract: 105,097. Smith, Ltd., D., Smith, D., and Robinson, W. March 28, 1916. Bending and forging horseshoes; bending, dies and formers; forging-dies.-Animal shoes are bent and forged in one stroke of a press-head by attachments or connexions thereon. The bar a<5>, Fig. 2, is centred by an adjustable stop 13 and bent horizontally between abutments 6 by the incline 3, Fig. 3, of the mandrel 1. The work is kept horizontal by flanges 22 on the abutments 6 and by engaging a slot in the holder 4, which is moved back with its slide 12 by the mandrel 1 as it descends. The abutments 6 are then closed on the mandrel 1 by inclines 27 on bars 23, Fig. 5, pivoted and adjustably secured to the press-head. The die 33, which encircles the mandrel, then forms the nail-holes, or indents and flattens the toe of the shoe. The mandrel and the abutments are interchangeably and adjustably mounted. In a modification, the bar 35a, Fig. 7, is bent round a former 36, which is advanced between abutments 39 by bars connected to a roller 52 acted on by a wedge 46, Fig. 6, operated through a lever 48 by the press-head 47. The bar is clamped to the plate 37 by a jaw 55, which is operated by an enlargement 57 thereon engaging an arm 58. The former 36 is centred by set-screws 42 and by interengaging wedge surfaces 43, 44, and then the abutments 39 and die 33 are operated as in the first modification.
Patent GB-565069-A (GB)
Title: Improvements in or relating to centrifugal speed governing devices
IPC: H01H35/10
Filed: 1943-03-19
Abstract: 565,069. Speed governors. COLLINS, H. N. March 19, 1943, No. 4537. [Class 57] In a multi-speed governor for regulating the speed of a rotatable member, the setting is changed from one speed range to another by centrifugal means caused'to act by compelling the rotor to assume a speed outside the range in which the governor is operating; the governing is effected by a centrifugal electric contact rotating with the rotary member. Fig. 1 shows a governor comprising a contact weight 17 mounted on a spring 18 ; when the rotor is made to rotate at a greater speed than the normal range, a spring-pressed lever weight 26 is forced into contact with an outer stop 28 and a projection 30 on its inner end contacts with the spring 18 and shortens its effective length. In a modification, the " fixed " contact 16 is mounted on a spring-pressed lever which assumes one or other position according to the speed range. The spring 18 may be replaced by a weighted bell-crank acting against spring pressure to force a contact on the unweighted arm against a contact on a similar abutment lever assuming one of two positions. The levers may move in planes normal to or passing through the axis. A three-speed governor, Fig. 5, comprises a lever 50 coacting .with abutment levers 32a, 32b. In the lowest range both abutment levers are still, and governing contact is made through contacts 16a, 17a ; in the second range only abutment lever 32a is moved and governing is through contacts 16b, 17b ; in the highest range, both abutments move and contacts 16a, 17a are effective. Specification 564,922, [Group XXXV], is referred to.
Patent GB-888011-A (GB)
Title: Improvements relating to electric wiring terminations
Inventor: MORDUE HAROLD
IPC: H01R11/12
Filed: 1957-02-11
Abstract: 888,011. Wire terminals. REYROLLE & CO. Ltd., A. May 9, 1958 [Feb. 11, 1957], No. 4678/57. Class 38 (1). An annular termination member for crimping to the bare end of a lead at a point spaced from the point of entry of the lead may comprise a stamping of tinned sheet copper 13 (Fig. 1) or 20 (Fig. 6), shaped to form an annual trough facing along the axis of the annulus, or a piece of thin copper tube 30 (Fig. 13), formed to provide an outwardlyfacing trough, the trough being adapted to take the bare end of a lead and being provided with an integral tab 12, 22 or 34 which can be bent over to close the trough at the crimping region. The crimp may be as shown in Fig. 5. Means for retaining the lead so that a portion of bare lead is held in the trough between its entry point and the crimp to avoid flexing stresses, in the area which may have been made brittle by crimping, may consist of a hole 15 in the hinge between member 11 and cover portion 12 or of alternative lugs 26 (Fig. 6), or 36A and 36B (Fig. 13), which are bent across the trough. Alternatively, the lead may enter through a notch in the wall of the trough. Fig. 20 shows the lead in position and the termination member being crimped across its outwardly-facing trough.
Patent GB-621935-A (GB)
Title: Package carrier
IPC: B62J7/08
Filed: 1947-02-18
Abstract: 621,935. Cycle luggage carriers. PETTERSEN, G. N. Feb. 18, 1947, No. 4716. Convention date, Feb. 28, 1946. [Class 136 (i)] In a cycle package carrier having a substantially rectangular shape and provided with end and side flaps adapted to be rotated from a turned in position to an upright position, the two side flaps being maintained in the upright position by having connections with one or more end flaps at their adjacent edges, each end flap 2 is spring actuated and carries on both sides fixed gripping members 9 which are forced inwardly by springs 3 to grip the adjacent edge of the respective side flaps 5, the side flaps being rotatable through 180 degrees between two horizontal positions. The hooks 9 are formed by the ends of bracing members 8. The base member of the carrier comprises a frame 1 to the bottom of which cross bars 4 are welded so that the side flaps 5 may be accommodated between the side portions of the frame 1 when in their innermost position. The end cross bars have extensions forming hoops 7 which embrace hubs 6 attached to the ends of the side flaps 5 and so support the side flaps in their outermost position and prevent them from being longitudinally displaced.
Patent GB-177933-A (GB)
Title: Improvements in and relating to fluid pumps and compressors
IPC: F04B39/00
Filed: 1921-02-10
Abstract: 177,933. Neighbour, A. G. L. Feb. 10,1921. Crank-actuated pumps.-A pump or compressor of the kind in which a crank-pin 15 revolving about a shaft 13 actuates a block 18 sliding in a straight guideway across a hollow piston, has the cranked part of the shaft entirely enclosed within the piston, the opposite ends of which are connected by parts 17 on both sides of the guideway. The inlet pipe 28 communicates with the cylinder space by way of ports 12 in the double-acting piston, ports 11 in the walls of the guideway 9, and passages 24 leading from the guideway to the compression spaces. These passages 24 are opened and closed by the block 18 in its reciprocation, the escape of fluid being controlled by separate valves 30. In the case of corrosive liquids, separate inlet valves 31 are used. The crank-shaft may be supported on each side of the cylinder, or, as shown in Fig. 2, on one side only. Lubricant is lifted from a well 32 by a chain 35 and led to a space 38 forming a reservoir, whence the lubricant passes through ducts 40 - - 43, and returns to the well 32.
Patent GB-765668-A (GB)
Title: Improvements relating to hydraulic couplings
Inventor: WINFIELD WILLIAM
IPC: F16D33/10
Filed: 1954-02-17
Abstract: 765,668. Hydraulic couplings. ROLLSROYCE, Ltd. Feb. 17, 1955 [Feb. 17, 1954], No. 4726/54. Class 69 (2). A hydrokinetic coupling is automatically emptied under conditions of rapid acceleration and/or rapid deceleration. A coupling comprises an impeller 13 and a runner 12 and the working liquid drains into a rotating reservoir containing a stationary scoop tube 25 for returning the liquid to the working chamber 22. The reservoir is divided by a partition 24 rotating with the impeller into spaces A, B, the liquid draining into the space A before entering the space B which contains the scoop 25. The partition 24 is formed with radial vanes dividing the space A into a number of auxiliary chambers and is provided with passages 32, 32A for each auxiliary chamber. The passages 32, 32A are located adjacent the trailing faces of the vanes. At a uniform speed leakage flow from the chamber 22 passes into the space A and thence through the passages 32, 32A into the space B to keep the entry of the scoop 25 immersed. If the impeller 13 is rapidly accelerated the liquid in the space A lags with respect to the vanes and the passages 32A, 32 are successively uncovered, discontinuing the flow to the reservoir space B, and thus return flow through the scoop to the working chamber 22 ceases. Valves 35 may control drain passages 21 between the working chamber 22 and the space A, the valves opening to permit increased flow from the working chamber upon acceleration. If the transfer passages 32, 32A are adjacent the leading faces of the vanes replenishing flow is interrupted during periods of rapid deceleration. Two chambers such as A may be provided in series so as to interrupt replenishing flow during both acceleration and deceleration. Flow between the scoop and the working chamber may be controlled by a thermostatic device as described in Specification 765,667.
Patent GB-884192-A (GB)
Title: Method of and apparatus for forming fibrous batts
IPC: D01G23/00
Filed: 1958-02-13
Abstract: 884,192. Forming loosely felted fibrous webs. JOA, C. G. Feb. 13, 1958 [Feb. 14, 1957], No. 4771/58. Class 96. [Also in Groups II and IX] Wood pulp sheets supplied along a shear-plate 16 to knurled feed-rollers 12, 13 are disintegrated by swing-hammers 10 on a rotor 9, the fragments passing through a screen 20 to a travelling screen 21 where they are subjected to strong suction from a box 24 exhausted at 25, 26. The web 30 thus formed passes beneath a flexible rubber seal 33, so that loose pieces on top are prevented from leaving with the web which is then subjected to further suction from a box 39. The suction of the box 24 draws air through the hammer mill. In modifications: (1) a rigid seal replaces the rubber seal 33 and partly houses a rotating paddle, the vanes of which level the top of the web 30; (2) the web 30 is formed on a suction roll and transferred to a travelling screen; and (3) the lower part of the hammer-mill casing 36 houses two screens travelling in opposite directions, the two webs thus formed being united into a two-ply product.